bivalve aquaculture and exotic species: a review of ecological
... exotic bivalves on the functioning of the benthic and/or intertidal ecosystem is very difficult to predict. Branch and Steffani (2004) provide an excellent review of one case (M. galloprovincialis in South Africa). In short, their findings suggest that although some of the mussel’s effects may have be ...
... exotic bivalves on the functioning of the benthic and/or intertidal ecosystem is very difficult to predict. Branch and Steffani (2004) provide an excellent review of one case (M. galloprovincialis in South Africa). In short, their findings suggest that although some of the mussel’s effects may have be ...
Summary
... • Most unharvested populations have a rate of increase that averages zero! • So what is the sustainable yield? • The philosophy behind the fixed quota harvest is: • If you harvest a given number of individuals (fixed number) then you stimulate that population to increase by setting into motion a cha ...
... • Most unharvested populations have a rate of increase that averages zero! • So what is the sustainable yield? • The philosophy behind the fixed quota harvest is: • If you harvest a given number of individuals (fixed number) then you stimulate that population to increase by setting into motion a cha ...
as a PDF
... importance perhaps only to bees and moths. Beetle pollination is particularly common in Annonaceae, Araceae (127, 155, 156), Cyclanthaceae (26), Lauraceae, Myristicaceae (10,76), and Palmae (27,67,68, 102). The beetles involved are diverse, from weevils two millimeters in length to scarabs that are ...
... importance perhaps only to bees and moths. Beetle pollination is particularly common in Annonaceae, Araceae (127, 155, 156), Cyclanthaceae (26), Lauraceae, Myristicaceae (10,76), and Palmae (27,67,68, 102). The beetles involved are diverse, from weevils two millimeters in length to scarabs that are ...
Genetic evidence for the cryptic species pair, Lottia digitalis and
... copepod genus Tisbe has grown from a few to over 63 species (Marcotte 1984) as a result of discovering signiWcant allozyme diVerences. Further, eight sibling species of polychaetes were identiWed within what was formerly a single species, Capitella capitata, based on diVerences in chromosome number ...
... copepod genus Tisbe has grown from a few to over 63 species (Marcotte 1984) as a result of discovering signiWcant allozyme diVerences. Further, eight sibling species of polychaetes were identiWed within what was formerly a single species, Capitella capitata, based on diVerences in chromosome number ...
Ecological and evolutionary consequences of size
... commercial exploitation and industrial fishing, an increasing number of species worldwide have been subjected to size-selective harvesting. There is growing evidence that decades of size-selective harvesting has led to the reduction in body sizes of many species and that such artificial selection ag ...
... commercial exploitation and industrial fishing, an increasing number of species worldwide have been subjected to size-selective harvesting. There is growing evidence that decades of size-selective harvesting has led to the reduction in body sizes of many species and that such artificial selection ag ...
The Overriding Importance of Environmental Context in Determining
... on the metric. By the definition followed here, strong interactors include keystone species, dominants, and all other species that have a large impact on populations as well as communities or ecosystems. Weak interactors are those that have little influence on any level of organization. This does no ...
... on the metric. By the definition followed here, strong interactors include keystone species, dominants, and all other species that have a large impact on populations as well as communities or ecosystems. Weak interactors are those that have little influence on any level of organization. This does no ...
"Ecosystem Engineers". - Cary Institute of Ecosystem Studies
... physical structure within the environment. These structural changes then affect abiotic resources and abiotic environmental conditions that may be critical for other organisms and even themselves (Figure 1). Such organisms were called physical ecosystem engineers by Jones et al. (1994, 1997). They or ...
... physical structure within the environment. These structural changes then affect abiotic resources and abiotic environmental conditions that may be critical for other organisms and even themselves (Figure 1). Such organisms were called physical ecosystem engineers by Jones et al. (1994, 1997). They or ...
Forest Cover, Condition, and Ecology in Human
... Forest cover, condition, and ecology in human-impacted forests / 197 Within the Social and Environmental Impact Assessment (SEIA), the mining company and hired consultants have predicted that even in the absence of mining, most of the littoral forest cover will be removed within the next four decad ...
... Forest cover, condition, and ecology in human-impacted forests / 197 Within the Social and Environmental Impact Assessment (SEIA), the mining company and hired consultants have predicted that even in the absence of mining, most of the littoral forest cover will be removed within the next four decad ...
Habitat corridors facilitate genetic resilience irrespective of species
... To test for the genetic effects of habitat fragmentation with corridors, we constructed a forward-time, agent-based model that tracks individuals and their associated genotypes through space and time. Here, we model a patch–corridor system that consists of patches of naturally occurring or restored ...
... To test for the genetic effects of habitat fragmentation with corridors, we constructed a forward-time, agent-based model that tracks individuals and their associated genotypes through space and time. Here, we model a patch–corridor system that consists of patches of naturally occurring or restored ...
The Effect of Recycling on Plant Competitive Hierarchies
... (e.g., hundreds of years). b, Litter is heterogeneous, with a certain fraction (mi) of the litter decomposing at rate qi and the remainder (1 ⫺ mi ; gray) decomposing at a much slower rate and effectively never being decomposed over the time shown here. ...
... (e.g., hundreds of years). b, Litter is heterogeneous, with a certain fraction (mi) of the litter decomposing at rate qi and the remainder (1 ⫺ mi ; gray) decomposing at a much slower rate and effectively never being decomposed over the time shown here. ...
Ecosystem resistance to invasion and the role of
... conversely on community resistance to invasion. The deterministic perspective views communities as either invasion resistant or invasion susceptible. The probabilistic perspectives places communities along a continuum where the probability of successful establishment varies from low to high. In this ...
... conversely on community resistance to invasion. The deterministic perspective views communities as either invasion resistant or invasion susceptible. The probabilistic perspectives places communities along a continuum where the probability of successful establishment varies from low to high. In this ...
Phytoplankton niches, traits and eco
... cesses. Further complications arise because environmental changes are multidimensional and responses may be both nonlinear and nonadditive. A promising approach to dealing with this complexity and increasing our mechanistic understanding of the effects of multiple stressors is to quantitatively defi ...
... cesses. Further complications arise because environmental changes are multidimensional and responses may be both nonlinear and nonadditive. A promising approach to dealing with this complexity and increasing our mechanistic understanding of the effects of multiple stressors is to quantitatively defi ...
Lesson 2 Objectives - University of Illinois College of Veterinary
... post-lesson tool, educators will be able to measure the degree of student understanding and effectiveness of material presentation. Students will appreciate their growth in understanding and accomplishment. ...
... post-lesson tool, educators will be able to measure the degree of student understanding and effectiveness of material presentation. Students will appreciate their growth in understanding and accomplishment. ...
Module 6 Ecological Principles - Members
... A particularly important feature of Arctic ecology is the influence of environmental gradients. The climatic regime has a strong influence on Arctic species and systems and the microclimate that is so important in ecology is strongly influenced by both small and large changes in the shape or topogra ...
... A particularly important feature of Arctic ecology is the influence of environmental gradients. The climatic regime has a strong influence on Arctic species and systems and the microclimate that is so important in ecology is strongly influenced by both small and large changes in the shape or topogra ...
The Niche
... An 15. interaction in which one animal (the herbivore) feeds on producers (such as plants) is called herbivory. Herbivores, like a ring-tailed lemur, can affect both the size and distribution of plant populations in a community and determine the places that certain plants can survive and grow. For e ...
... An 15. interaction in which one animal (the herbivore) feeds on producers (such as plants) is called herbivory. Herbivores, like a ring-tailed lemur, can affect both the size and distribution of plant populations in a community and determine the places that certain plants can survive and grow. For e ...
arXiv:q-bio/0607016v1 [q
... the period of observation the abundance level of Coscinodiscus sp is higher than that of Biddulphia sp. Now, because all the species interact in a common marine environment, in principle they compete for the common resources available (such as sunlight, dissolved nutrient). In our study region, amo ...
... the period of observation the abundance level of Coscinodiscus sp is higher than that of Biddulphia sp. Now, because all the species interact in a common marine environment, in principle they compete for the common resources available (such as sunlight, dissolved nutrient). In our study region, amo ...
Where will your first stop be?
... Area of Study: Ecosystems /Animal adaptations and survival A habitat is any place where a particular animal or plant lives. Examples of a habitat include a lake, a desert, or a forest. Descriptions of environments using temperature and rainfall are used to group habitats together. Animals, which liv ...
... Area of Study: Ecosystems /Animal adaptations and survival A habitat is any place where a particular animal or plant lives. Examples of a habitat include a lake, a desert, or a forest. Descriptions of environments using temperature and rainfall are used to group habitats together. Animals, which liv ...
east rennell solomon islands
... of the whole archipelago, took place in 2004 done by some ten agencies led by the Nature ...
... of the whole archipelago, took place in 2004 done by some ten agencies led by the Nature ...
Alien plants in checklists and floras: towards better communication
... evidence of introduction, and a number of other helpful criteria. These include ease of naturalization elsewhere, character of the overall distribution area, type of habitat, and relationship with biota on other trophic levels (some alien plants were reported to harbor less phytophagous insects than ...
... evidence of introduction, and a number of other helpful criteria. These include ease of naturalization elsewhere, character of the overall distribution area, type of habitat, and relationship with biota on other trophic levels (some alien plants were reported to harbor less phytophagous insects than ...
Biodiversity in a Changing World
... The threats facing Ontario’s plant and animal species are constantly increasing. However, there are five main threats that are impacting all species across Ontario, pollution, habitat loss, invasive species, unsustainable use and climate change. Pollution of the natural ecosystems includes contamina ...
... The threats facing Ontario’s plant and animal species are constantly increasing. However, there are five main threats that are impacting all species across Ontario, pollution, habitat loss, invasive species, unsustainable use and climate change. Pollution of the natural ecosystems includes contamina ...
Phylum: Chordata
... Biogeography – Temperate marine and fresh waters worldwide Habitat – Lampreys typically live in the ocean and must migrate up fresh water rivers to spawn (anadromous). Ammocoetes are found in freshwater rivers and streams. Diet - Some adult lampreys are parasitic and feed by attaching their mouth to ...
... Biogeography – Temperate marine and fresh waters worldwide Habitat – Lampreys typically live in the ocean and must migrate up fresh water rivers to spawn (anadromous). Ammocoetes are found in freshwater rivers and streams. Diet - Some adult lampreys are parasitic and feed by attaching their mouth to ...
Conference Abstracts - The Australian Mammal Society
... Until recently, our tropical savannas had apparently escaped the broad-scale biodiversity declines that have affected other Australian regions in the time since European colonisation. In the last couple of decades, this complacency view has been exposed as false, with geographically extensive and se ...
... Until recently, our tropical savannas had apparently escaped the broad-scale biodiversity declines that have affected other Australian regions in the time since European colonisation. In the last couple of decades, this complacency view has been exposed as false, with geographically extensive and se ...
Foraging Habitat of Sepia officinalis at STARESO Research Station
... Initially we intended to have both laboratory and field portions of our study. With numerous studies showing that substrate composition affects cuttlefish patterning and behavior, we wanted to examine if this patterning is context specific. We planned on examining cuttlefish behavior and patterning ...
... Initially we intended to have both laboratory and field portions of our study. With numerous studies showing that substrate composition affects cuttlefish patterning and behavior, we wanted to examine if this patterning is context specific. We planned on examining cuttlefish behavior and patterning ...
biodiversity on farmland - Bio
... This booklet is produced for New Zealand farmers and other land owners to demonstrate how biodiversity can be enhanced to give multi-value benefits for production, conservation, recreation, historical, cultural, aesthetic and Maori needs. It is an outcome of the “Strategies to Enhance Biodiversity o ...
... This booklet is produced for New Zealand farmers and other land owners to demonstrate how biodiversity can be enhanced to give multi-value benefits for production, conservation, recreation, historical, cultural, aesthetic and Maori needs. It is an outcome of the “Strategies to Enhance Biodiversity o ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.